/Engine/Source/Runtime/Slate/Public/Widgets/Text/SlateEditableTextLayout.h
Set the brush to use when drawing the cursor
void SetCursorBrush ( const [TAttribute](API\Runtime\Core\Misc\TAttribute)< const [FSlateBrush](API\Runtime\SlateCore\Styling\FSlateBrush) * > & InCursorBrush )